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//===-- MonitoringProcessLauncher.cpp ---------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Host/MonitoringProcessLauncher.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/ModuleSpec.h"
#include "lldb/Host/HostProcess.h"
#include "lldb/Target/Platform.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/ProcessLaunchInfo.h"
#include "lldb/Utility/Error.h"
#include "lldb/Utility/Log.h"
#include "llvm/Support/FileSystem.h"
using namespace lldb;
using namespace lldb_private;
MonitoringProcessLauncher::MonitoringProcessLauncher(
std::unique_ptr<ProcessLauncher> delegate_launcher)
: m_delegate_launcher(std::move(delegate_launcher)) {}
HostProcess
MonitoringProcessLauncher::LaunchProcess(const ProcessLaunchInfo &launch_info,
Error &error) {
ProcessLaunchInfo resolved_info(launch_info);
error.Clear();
char exe_path[PATH_MAX];
PlatformSP host_platform_sp(Platform::GetHostPlatform());
const ArchSpec &arch_spec = resolved_info.GetArchitecture();
FileSpec exe_spec(resolved_info.GetExecutableFile());
llvm::sys::fs::file_status stats;
status(exe_spec.GetPath(), stats);
if (!is_regular_file(stats)) {
ModuleSpec module_spec(exe_spec, arch_spec);
lldb::ModuleSP exe_module_sp;
error =
host_platform_sp->ResolveExecutable(module_spec, exe_module_sp, NULL);
if (error.Fail())
return HostProcess();
if (exe_module_sp) {
exe_spec = exe_module_sp->GetFileSpec();
status(exe_spec.GetPath(), stats);
}
}
if (exists(stats)) {
exe_spec.GetPath(exe_path, sizeof(exe_path));
} else {
resolved_info.GetExecutableFile().GetPath(exe_path, sizeof(exe_path));
error.SetErrorStringWithFormat("executable doesn't exist: '%s'", exe_path);
return HostProcess();
}
resolved_info.SetExecutableFile(exe_spec, false);
assert(!resolved_info.GetFlags().Test(eLaunchFlagLaunchInTTY));
HostProcess process =
m_delegate_launcher->LaunchProcess(resolved_info, error);
if (process.GetProcessId() != LLDB_INVALID_PROCESS_ID) {
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
Host::MonitorChildProcessCallback callback =
launch_info.GetMonitorProcessCallback();
bool monitor_signals = false;
if (callback) {
// If the ProcessLaunchInfo specified a callback, use that.
monitor_signals = launch_info.GetMonitorSignals();
} else {
callback = Process::SetProcessExitStatus;
}
process.StartMonitoring(callback, monitor_signals);
if (log)
log->PutCString("started monitoring child process.");
} else {
// Invalid process ID, something didn't go well
if (error.Success())
error.SetErrorString("process launch failed for unknown reasons");
}
return process;
}
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